We stayed at Pop back in June and had not made the reservation prior to the March deadline. When we arrived at Pop via our own vehicle, we reported to the guard at the gate that we were checking in. He asked for my name but did not mention anything about parking or a fee. Since we did online check in, we were able to go right to our room. Using online check in, we were never asked about whether we had a vehicle and we did not receive a parking pass. We parked in a handicap space near our building. Upon check out, we had no charges for parking.
In hindsight, I wonder if it was because I was in a handicap space that no one seemed to care that I did not have a parking pass and/or I was not charged for parking. I also wonder what would have happened if I were parked in a "regular" space without a parking pass. At that point, how would they know whose car it is and which room to charge? Would they tow?
This whole parking fee seems to be on an "honor system" without Disney being able to enforce it very efficiently.
On our next trip, we will be using ME, so parking will not be a concern, but I do wonder about it!